1/*	$OpenBSD: param.h,v 1.39 2023/12/14 13:26:49 claudio Exp $	*/
2
3/*-
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by TooLs GmbH.
19 * 4. The name of TooLs GmbH may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef	_POWERPC_PARAM_H_
35#define	_POWERPC_PARAM_H_
36
37#ifdef	_KERNEL
38#ifndef	_LOCORE
39#include <machine/cpu.h>
40#endif	/* _LOCORE */
41#endif
42
43#define	MACHINE_ARCH	"powerpc"
44#define	_MACHINE_ARCH	powerpc
45#define	MID_MACHINE	MID_POWERPC
46
47#define	PAGE_SHIFT	12
48#define	PAGE_SIZE	(1 << PAGE_SHIFT)
49#define	PAGE_MASK	(PAGE_SIZE - 1)
50
51#ifdef _KERNEL
52
53#define	NBPG		PAGE_SIZE
54#define	PGSHIFT		PAGE_SHIFT
55#define	PGOFSET		PAGE_MASK
56
57#define	UPAGES		4			/* pages of u-area */
58#define	USPACE		(UPAGES * PAGE_SIZE)	/* total size of u-area */
59#define	USPACE_ALIGN	0			/* u-area alignment 0-none */
60
61#define	NMBCLUSTERS	(32 * 1024)		/* max cluster allocation */
62
63/*
64 * Fixed segments
65 */
66#define	PPC_USER_SR		13
67#define	PPC_KERNEL_SR	14
68#define	PPC_KERNEL_SEG0	0xfffff0
69#define	PPC_KERNEL_SEGMENT	(PPC_KERNEL_SEG0 + PPC_KERNEL_SR)
70#define	PPC_USER_ADDR	((void *)(PPC_USER_SR << ADDR_SR_SHIFT))
71
72#endif /* _KERNEL */
73
74#endif /* _POWERPC_PARAM_H_ */
75